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I Run Bare-Metal Kubernetes on $200 of Scrap Hardware (And Why I Burned 3 SD Cards Learning)
TL;DR: A developer shares building a $200 bare-metal Kubernetes homelab and reflecting on the lessons learned from failures and fixes. It’s a deep-dive autopsy rather than a tutorial, emphasizing practical pitfalls and insights beyond certifications.
The author repurposes a Dell OptiPlex plus Raspberry Pis into a 4-node bare-metal Kubernetes cluster using Talos Linux, Cilium, ArgoCD, Longhorn, MetalLB, and monitoring. The total cost was about $220. He describes intentionally breaking things to learn: deleting CNI, misconfiguring host networking, and policy mistakes. The piece contrasts homelab experimentation with managed services like EKS, highlighting that real understanding comes from failures under less controlled conditions. It argues that certifications teach API usage, not the operational realities like disk pressure and quota management. The narrative is an autopsy of mistakes and the practical lessons gained from them.
Question for the room: What’s your most surprising failure in a homelab Kubernetes setup and the key takeaway?
— via dev.to
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